standardbred


stan·dard·bred

or Stan·dard·bred S0702000 (stăn′dərd-brĕd′)n. Any of an American breed of trotting and pacing horses developed especially for harness racing by crossing Thoroughbreds with Morgans and other breeds.
[From the fact that in order to be registered as a standardbred, a horse originally had to be able to trot a mile within a standard time of two and a half minutes.]

stand•ard•bred

(ˈstæn dərdˌbrɛd)

n. (often cap.) any of an American breed of trotting and pacing horses used for harness racing. [1890–95]